RsaCtfTool vs Tenzai: side-by-side comparison (2026)
RsaCtfTool is a free penetration testing solution. Tenzai is a commercial penetration testing solution by Tenzai. Features, integrations, deployment and the company behind each one, side by side.
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A utility that attempts to decrypt data from weak RSA public keys and recover private keys using multiple integer factorization algorithms.
Agentic AI platform for continuous, autonomous penetration testing of enterprise apps.
Side-by-side comparison
Feature
RsaCtfTool
Tenzai
Pricing model
Free
Commercial
Category
Penetration Testing
Penetration Testing
Deployment and fit
Deployment type
On-Premises
Hybrid
Company size fit
Startup, SMB
Mid-Market, Enterprise
Open source
GitHub stars
6,830
–
Last commit
Mar 2026
–
Company
Company
–
Tenzai
Use cases and capabilities
CTF
Yes
No
Education
Yes
No
AI Pentesting
No
Yes
Agentic AI Security
No
Yes
Continuous Testing
No
Yes
Red Team
No
Yes
Vulnerability Exploitation
No
Yes
Penetration Testing Framework
No
Yes
Vulnerability
No
Yes
Web Security
No
Yes
App Security
No
Yes
Core features
No features listed
6 features listed
Integrations
No integrations listed
2 integrations listed
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